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How generate systems of equation and sol...

SSMB 100 Maple 2024
coefficients conjugate duplicate-question
May 05 2025
0 3

in here How we can seperate the coefficent of conjugate this conjugate sign how remove from my equation ?

> 

restart
> 

with(PDEtools)
> 

with(LinearAlgebra)
> 

NULL
> 

with(SolveTools)
> 

undeclare(prime)

`There is no more prime differentiation variable; all derivatives will be displayed as indexed functions`

 (1)
> 

declare(u(x, t)); declare(U(xi)); declare(V(xi)); declare(P(x, t)); declare(q(x, t))

u(x, t)*`will now be displayed as`*u

  

U(xi)*`will now be displayed as`*U

  

V(xi)*`will now be displayed as`*V

  

P(x, t)*`will now be displayed as`*P

  

q(x, t)*`will now be displayed as`*q

 (2)
> 

pde := I*(diff(u(x, t), t))+diff(u(x, t), `$`(x, 2))+abs(u(x, t))^2*u(x, t) = 0

I*(diff(u(x, t), t))+diff(diff(u(x, t), x), x)+abs(u(x, t))^2*u(x, t) = 0

 (3)
> 

S := u(x, t) = (sqrt(a)+P(x, t))*exp(I*a*t)

u(x, t) = (a^(1/2)+P(x, t))*exp(I*a*t)

 (4)
> 

S1 := conjugate(u(x, t)) = (sqrt(a)+conjugate(P(x, t)))*exp(-I*a*t)

conjugate(u(x, t)) = (a^(1/2)+conjugate(P(x, t)))*exp(-I*a*t)

 (5)
> 

Q := abs(u(x, t))^2 = u(x, t)*conjugate(u(x, t))

abs(u(x, t))^2 = u(x, t)*conjugate(u(x, t))

 (6)
> 

F1 := expand(simplify(subs({S, S1}, rhs(Q))))

a+a^(1/2)*P(x, t)+a^(1/2)*conjugate(P(x, t))+abs(P(x, t))^2

 (7)
> 

F2 := abs(u(x, t))^2 = remove(has, F1, abs(P(x, t))^2)

abs(u(x, t))^2 = a+a^(1/2)*P(x, t)+a^(1/2)*conjugate(P(x, t))

 (8)
> 

FF := collect(F2, sqrt(a))

abs(u(x, t))^2 = a+(P(x, t)+conjugate(P(x, t)))*a^(1/2)

 (9)
> 

F3 := abs(u(x, t))^2*u(x, t) = (a+(P(x, t)+conjugate(P(x, t)))*sqrt(a))*rhs(S)

abs(u(x, t))^2*u(x, t) = (a+(P(x, t)+conjugate(P(x, t)))*a^(1/2))*(a^(1/2)+P(x, t))*exp(I*a*t)

 (10)
> 

F4 := remove(has, F3, P(x, t)*conjugate(P(x, t)))

abs(u(x, t))^2*u(x, t) = (a+(P(x, t)+conjugate(P(x, t)))*a^(1/2))*(a^(1/2)+P(x, t))*exp(I*a*t)

 (11)
> 

expand(%)

abs(u(x, t))^2*u(x, t) = exp(I*a*t)*a^(3/2)+2*exp(I*a*t)*a*P(x, t)+exp(I*a*t)*a^(1/2)*P(x, t)^2+exp(I*a*t)*a*conjugate(P(x, t))+exp(I*a*t)*a^(1/2)*conjugate(P(x, t))*P(x, t)

 (12)
> 

pde_linear, pde_nonlinear := selectremove(proc (term) options operator, arrow; not has((eval(term, P(x, t) = T*P(x, t)))/T, T) end proc, expand(%))

() = (), abs(u(x, t))^2*u(x, t) = exp(I*a*t)*a^(3/2)+2*exp(I*a*t)*a*P(x, t)+exp(I*a*t)*a^(1/2)*P(x, t)^2+exp(I*a*t)*a*conjugate(P(x, t))+exp(I*a*t)*a^(1/2)*conjugate(P(x, t))*P(x, t)

 (13)
> 

F6 := abs(u(x, t))^2*u(x, t) = exp(I*a*t)*a^(3/2)+2*exp(I*a*t)*a*P(x, t)+exp(I*a*t)*a*conjugate(P(x, t))

abs(u(x, t))^2*u(x, t) = exp(a*t*I)*a^(3/2)+2*exp(a*t*I)*a*P(x, t)+exp(a*t*I)*a*conjugate(P(x, t))

 (14)
> 

subs({F6, S}, pde)

I*(diff((a^(1/2)+P(x, t))*exp(a*t*I), t))+diff(diff((a^(1/2)+P(x, t))*exp(a*t*I), x), x)+exp(a*t*I)*a^(3/2)+2*exp(a*t*I)*a*P(x, t)+exp(a*t*I)*a*conjugate(P(x, t)) = 0

 (15)
> 

eval(%)

I*((diff(P(x, t), t))*exp(a*t*I)+I*(a^(1/2)+P(x, t))*a*exp(a*t*I))+(diff(diff(P(x, t), x), x))*exp(a*t*I)+exp(a*t*I)*a^(3/2)+2*exp(a*t*I)*a*P(x, t)+exp(a*t*I)*a*conjugate(P(x, t)) = 0

 (16)
> 

expand(%)

I*(diff(P(x, t), t))*exp(a*t*I)+exp(a*t*I)*a*P(x, t)+(diff(diff(P(x, t), x), x))*exp(a*t*I)+exp(a*t*I)*a*conjugate(P(x, t)) = 0

 (17)
> 

expand(%/exp(I*a*t))

I*(diff(P(x, t), t))+a*P(x, t)+diff(diff(P(x, t), x), x)+a*conjugate(P(x, t)) = 0

 (18)
> 

PP := collect(%, a)

(P(x, t)+conjugate(P(x, t)))*a+I*(diff(P(x, t), t))+diff(diff(P(x, t), x), x) = 0

 (19)
> 

U1 := P(x, t) = r[1]*exp(I*(l*x-m*t))+r[2]*exp(-I*(l*x-m*t))

P(x, t) = r[1]*exp(I*(l*x-m*t))+r[2]*exp(-I*(l*x-m*t))

 (20)
> 

eval(subs(U1, PP))

(r[1]*exp(I*(l*x-m*t))+r[2]*exp(-I*(l*x-m*t))+conjugate(r[1]*exp(I*(l*x-m*t))+r[2]*exp(-I*(l*x-m*t))))*a+I*(-I*r[1]*m*exp(I*(l*x-m*t))+I*r[2]*m*exp(-I*(l*x-m*t)))-r[1]*l^2*exp(I*(l*x-m*t))-r[2]*l^2*exp(-I*(l*x-m*t)) = 0

 (21)
> 

simplify((r[1]*exp(I*(l*x-m*t))+r[2]*exp(-I*(l*x-m*t))+conjugate(r[1]*exp(I*(l*x-m*t))+r[2]*exp(-I*(l*x-m*t))))*a+I*(-I*r[1]*m*exp(I*(l*x-m*t))+I*r[2]*m*exp(-I*(l*x-m*t)))-r[1]*l^2*exp(I*(l*x-m*t))-r[2]*l^2*exp(-I*(l*x-m*t)) = 0)

conjugate(r[1]*exp(I*(l*x-m*t))+r[2]*exp(-I*(l*x-m*t)))*a+r[2]*(-l^2+a-m)*exp(-I*(l*x-m*t))+r[1]*exp(I*(l*x-m*t))*(-l^2+a+m) = 0

 (22)
> 

J := eval(%)

conjugate(r[1]*exp(I*(l*x-m*t))+r[2]*exp(-I*(l*x-m*t)))*a+r[2]*(-l^2+a-m)*exp(-I*(l*x-m*t))+r[1]*exp(I*(l*x-m*t))*(-l^2+a+m) = 0

 (23)
> 

expand(%)

a*conjugate(r[1])*exp(I*conjugate(m)*conjugate(t))/exp(I*conjugate(l)*conjugate(x))+a*conjugate(r[2])*exp(I*conjugate(l)*conjugate(x))/exp(I*conjugate(m)*conjugate(t))-r[2]*exp(I*m*t)*l^2/exp(I*l*x)+r[2]*exp(I*m*t)*a/exp(I*l*x)-r[2]*exp(I*m*t)*m/exp(I*l*x)-r[1]*exp(I*l*x)*l^2/exp(I*m*t)+r[1]*exp(I*l*x)*a/exp(I*m*t)+r[1]*exp(I*l*x)*m/exp(I*m*t) = 0

 (24)
> 

indets(%)

{a, l, m, t, x, r[1], r[2], exp(I*l*x), exp(I*m*t), exp(I*conjugate(l)*conjugate(x)), exp(I*conjugate(m)*conjugate(t)), conjugate(l), conjugate(m), conjugate(t), conjugate(x), conjugate(r[1]), conjugate(r[2])}

 (25)
> 

subs({exp(-I*(l*x-m*t)) = Y, exp(I*(l*x-m*t)) = X}, J)

conjugate(X*r[1]+Y*r[2])*a+r[2]*(-l^2+a-m)*Y+r[1]*X*(-l^2+a+m) = 0

 (26)
> 

collect(%, {X, Y})

conjugate(X*r[1]+Y*r[2])*a+r[2]*(-l^2+a-m)*Y+r[1]*X*(-l^2+a+m) = 0

 (27)

Download conjugate.mw

make faster and explicit way for plottin...

SSMB 100 Maple 2024
performance explore numeric
March 08 2025
0 2

this function i have is so long and my parameter are twenty they are two much when i make a change in explore i the change is so slow and i can't see some of this parameter how act to figure when i change becuase the placement of parameters i want some of parameter being in right  and some of them being in right  and figure be in the middle for see them together can we do something like that?

figure.mw

How do replacing some special character ...

SSMB 100 Maple 2024
substitution duplicate-question duplicate-account
March 03 2025
1 2

i want to to get the eq(14) but i need to do some Hard replacing which i am unfamiliar with it any one can help ?

> 

restart;
> 

 

> 

f :=  1 + exp(eta[1]) + b[1, 2]*exp(eta[1] + eta[2]) + exp(eta[2]) + b[2, 3]*exp(eta[2] + eta[3]) + b[1, 2]*b[1, 3]*b[2, 3]*exp(eta[1] + eta[2] + eta[3]) + b[1, 3]*exp(eta[1] + eta[3]) + exp(eta[3])

1+exp(eta[1])+b[1, 2]*exp(eta[1]+eta[2])+exp(eta[2])+b[2, 3]*exp(eta[2]+eta[3])+b[1, 2]*b[1, 3]*b[2, 3]*exp(eta[1]+eta[2]+eta[3])+b[1, 3]*exp(eta[1]+eta[3])+exp(eta[3])

 (1)
> 

NULL
> 

C :=(i,j)->6*l[j]*l[i]*(l[i] + l[j])/((l[i] - l[j])^2*beta)

proc (i, j) options operator, arrow; 6*l[j]*l[i]*(l[i]+l[j])/((l[i]-l[j])^2*beta) end proc

 (2)
> 

NULL
> 

etai := k[i]*(t*w[i]+y*l[i]+x)+eta[i]

k[i]*(t*w[i]+y*l[i]+x)+eta[i]

 (3)
> 

theta[i] := t*w[i]+y*l[i]+x

t*w[i]+y*l[i]+x

 (4)
> 

eqw := w[i] = -(alpha*l[i]+beta)/l[i]

w[i] = -(alpha*l[i]+beta)/l[i]

 (5)
> 

theta[1] := normal(eval(eval(theta[i], eqw), i = 1)); theta[2] := normal(eval(eval(theta[i], eqw), i = 2))

-(alpha*t*l[1]-y*l[1]^2+beta*t-x*l[1])/l[1]

  

-(alpha*t*l[2]-y*l[2]^2+beta*t-x*l[2])/l[2]

 (6)
> 

fix:=proc(F)
   local i,j;
   i:=op(1,F); j:=op(2,F);
   if i<j then
      C(i,j);
   else
      F;
   fi;
end proc:
> 

evalindets(f,b[anything,anything],F->fix(F));

1+exp(eta[1])+6*l[2]*l[1]*(l[1]+l[2])*exp(eta[1]+eta[2])/((l[1]-l[2])^2*beta)+exp(eta[2])+6*l[3]*l[2]*(l[2]+l[3])*exp(eta[2]+eta[3])/((l[2]-l[3])^2*beta)+216*l[2]^2*l[1]^2*(l[1]+l[2])*l[3]^2*(l[1]+l[3])*(l[2]+l[3])*exp(eta[1]+eta[2]+eta[3])/((l[1]-l[2])^2*beta^3*(l[1]-l[3])^2*(l[2]-l[3])^2)+6*l[3]*l[1]*(l[1]+l[3])*exp(eta[1]+eta[3])/((l[1]-l[3])^2*beta)+exp(eta[3])

 (7)
> 

simplify(%);

1+exp(eta[1])+b[1, 2]*exp(eta[1]+eta[2])+exp(eta[2])+b[2, 3]*exp(eta[2]+eta[3])+b[1, 2]*b[1, 3]*b[2, 3]*exp(eta[1]+eta[2]+eta[3])+b[1, 3]*exp(eta[1]+eta[3])+exp(eta[3])

 (8)
 

 

Download get_result.mw

How can solve some the Linear algebra q...

SSMB 100 Maple
linear-algebra homework duplicate-account
March 02 2025
1 0

How can change the shape of plot in cont...

SSMB 100 Maple 2024
explore plotting duplicate-question
February 24 2025
2 5

i want try all number to my parameter for check the shape of plot there is any way for doing that?

> 

restart
> 

with(plots)
> 

M := 4*b^2*beta*((a*y-2*alpha*t+x)*b^2+a*(-2*beta*t+a*(a*y-2*alpha*t+x)))/(-b^6*beta*y^2+(-4*t*y*beta^2+(-2*a^2*y^2+(4*(alpha*t-(1/2)*x))*y*a-4*(alpha*t-(1/2)*x)^2)*beta+3*a)*b^4+(-4*t^2*beta^3+4*a*t*(a*y-2*alpha*t+x)*beta^2-a^2*(a*y-2*alpha*t+x)^2*beta+6*a^3)*b^2+3*a^5)
> 

alpha = 1; beta := 1; a := -1; b := -2; t := 0

alpha = 1

  

1

  

-1

  

-2

  

0

 (1)
> 

plots:-contourplot(M, x = -100 .. 100, y = -100 .. 100, title = contour, grid = [100, 100], colorbar = false)

 
 

NULL

Download control-trajectory.mw

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